MIL-DTL-38999 Series II connectors offer rugged durability with up to 128 contacts in a sealed insert, designed for harsh environments. Operating between -65 °C and 200 °C, these connectors come in various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they ensure reliable performance. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for demanding applications requiring secure and durable electrical connections.